Basionym Name:Lichen didactylus With., [as 'didactylos'] Bot. arr. veg. Gr. Brit. (London) 2: 718 (1776)
Homotypic synonyms:Peltigera didactyla (With.) J.R. Laundon, Lichenologist 16(3): 217 (1984)Peltigera didactyla var. didactyla (With.) J.R. Laundon, Lichenologist 16(3): 217 (1984)